The Miami Marlins have made a key move ahead of the 2024 trade deadline, sending A.J. Puk to the Arizona Diamondbacks in exchange for infield prospect Deyvison de los Santos. Puk, who was once a top prospect with the Oakland Athletics, has transitioned to a reliable middle reliever since his debut in 2019. He has excelled this season with a 1.32 ERA and two saves for the Diamondbacks, though he is currently sidelined due to a flexor strain in his elbow. Despite the injury, the team remains optimistic about his recovery, believing he won't need surgery. In the meantime, Justin Martinez is expected to step into the closer role while Puk is out. Martinez boasts an impressive 0.90 ERA this season, demonstrating his potential as a strong replacement.